In November 1614, a battle between Tokugawa and Toyotomi--the Siege of Osaka--breaks out, and the Osaka Castle comes under siege by the Tokugawa army. Yodo takes a resolute stance on fighting against Tokugawa until the end, but is forced to make peace with Tokugawa due to Ieyasu's clever scheme. Ieyasu, however, continues maneuvering to bring Toyotomi down, and Toyotomi again faces a predicament. Hidetada sneaks into the Osaka Castle in order to urge Hideyori to surrender.
「大坂冬の陣」が始まり、豊臣方は籠城へと追い込まれる。徹底抗戦の構えを崩さなかった淀（宮沢りえ）だが、家康（北大路欣也）の巧みな戦術に、和睦を受け入れるしかなかった。しかし、和睦には家康のワナが仕掛けてあり、豊臣方は窮地に追い込まれる。秀忠（向井理）は、秀頼（太賀）に降伏を勧めようと、大坂城に潜り込むが…。
